revert r126858.

llvm-svn: 126874
diff --git a/clang/lib/CodeGen/CodeGenFunction.h b/clang/lib/CodeGen/CodeGenFunction.h
index 25fbd81..9b698d3 100644
--- a/clang/lib/CodeGen/CodeGenFunction.h
+++ b/clang/lib/CodeGen/CodeGenFunction.h
@@ -1610,7 +1610,7 @@
                          llvm::GlobalValue::LinkageTypes Linkage);
 
   /// EmitParmDecl - Emit a ParmVarDecl or an ImplicitParamDecl.
-  void EmitParmDecl(const VarDecl &D, llvm::Value *Arg, unsigned ArgNo);
+  void EmitParmDecl(const VarDecl &D, llvm::Value *Arg);
 
   /// protectFromPeepholes - Protect a value that we're intending to
   /// store to the side, but which will probably be used later, from